A data storage device is disclosed comprising a head actuated over a magnetic media, wherein the head comprises a write element and a first read element. A preamp circuit comprising an interface includes at least a write line associated with the write element of the head and a first read line associated with the first read element of the head. A first read signal is received from the preamp circuit over the first read line during a read operation, and configuration data is transmitted to the preamp circuit over the first read line during a write operation.
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1. A data storage device comprising: a magnetic media; a head actuated over the magnetic media, wherein the head comprises a write element and a first read element; a preamp circuit comprising an interface comprising at least a write line associated with the write element of the head and a first read line associated with the first read element of the head; and control circuitry configured to: receive a first read signal from the preamp circuit over the first read line during a read operation; transmit write data to the preamp circuit over the write line during a write operation; and concurrently transmit configuration data to the preamp circuit over the first read line during the write operation.
A data storage device, such as a hard disk drive or solid-state drive, addresses the challenge of efficiently managing data transfer and configuration operations. The device includes a magnetic media for storing data, a head with a write element and a first read element positioned over the media, and a preamp circuit. The preamp circuit has an interface with a write line connected to the write element and a first read line connected to the first read element. Control circuitry within the device handles data operations by receiving a first read signal from the preamp circuit over the first read line during a read operation. During a write operation, the control circuitry transmits write data to the preamp circuit over the write line while simultaneously sending configuration data to the preamp circuit over the first read line. This concurrent transmission optimizes performance by utilizing the read line for configuration data during write operations, reducing the need for additional dedicated lines and improving efficiency. The system ensures reliable data storage and retrieval while minimizing hardware complexity.
2. The data storage device as recited in claim 1 , wherein the configuration data configures at least one write parameter of the write operation.
A data storage device includes a controller and a non-volatile memory array. The controller performs write operations to store data in the memory array, where the write operations are governed by configuration data. This configuration data adjusts at least one write parameter, such as write voltage, write duration, or write current, to optimize performance, reliability, or endurance of the memory array. The non-volatile memory array may include flash memory, such as NAND or NOR flash, where the configuration data ensures proper programming of memory cells by adjusting parameters like pulse amplitude, pulse width, or verification thresholds. The controller may dynamically update the configuration data based on environmental conditions, wear leveling, or error rates to maintain data integrity. This approach improves write efficiency and reduces errors by tailoring write operations to the specific characteristics of the memory array and operating conditions. The system may also include error correction mechanisms that work in conjunction with the configurable write parameters to enhance data reliability.
3. The data storage device as recited in claim 2 , wherein the write parameter comprises at least one of an amplitude of a write current, an overshoot amplitude of the write current, or an overshoot duration of the write current.
This invention relates to data storage devices, specifically magnetic recording systems, addressing the challenge of optimizing write operations to improve data reliability and storage density. The device includes a write head configured to write data to a storage medium by applying a write current with adjustable parameters. These parameters include the amplitude of the write current, the overshoot amplitude (a temporary increase in current beyond the steady-state level), and the overshoot duration (how long the overshoot lasts). By precisely controlling these parameters, the device enhances the magnetic switching process in the storage medium, reducing errors and improving write performance. The write head may also include a heater to assist in the writing process, further refining the magnetic transitions. The invention aims to balance write speed, energy efficiency, and data integrity by dynamically adjusting these parameters based on operating conditions or medium characteristics. This approach is particularly useful in high-density storage systems where precise magnetic control is critical. The device may also incorporate feedback mechanisms to monitor and refine the write parameters in real time, ensuring consistent performance across different storage environments.
4. A data storage device comprising: a magnetic media; a head actuated over the magnetic media, wherein the head comprises a write element and a first read element; a preamp circuit comprising an interface comprising at least a write line associated with the write element of the head and a first read line associated with the first read element of the head; and control circuitry configured to: receive a first read signal from the preamp circuit over the first read line during a read operation; and transmit configuration data to the preamp circuit over the first read line during a write operation, wherein the configuration data configures at least one write parameter of the write operation, wherein the write parameter comprises at least one of an amplitude of a laser current, an overshoot amplitude of the laser current, or an overshoot duration of the laser current.
This invention relates to data storage devices, specifically hard disk drives (HDDs) or hybrid drives using magnetic media. The problem addressed is optimizing write operations by dynamically adjusting laser-assisted write parameters, such as laser current amplitude, overshoot amplitude, or overshoot duration, to improve write performance and reliability. The device includes magnetic media, a head with a write element and a first read element, and a preamp circuit. The preamp circuit has an interface with a write line connected to the write element and a first read line connected to the first read element. During a read operation, the preamp circuit sends a first read signal to control circuitry over the first read line. During a write operation, the control circuitry transmits configuration data to the preamp circuit over the same first read line. This configuration data adjusts at least one write parameter, such as laser current amplitude, overshoot amplitude, or overshoot duration, to optimize the write process. The use of the read line for configuration data transmission simplifies the design by reusing existing connections, reducing complexity and cost. The dynamic adjustment of laser parameters ensures precise control over the write process, enhancing data integrity and performance.
5. A data storage device comprising: a magnetic media; a head actuated over the magnetic media, wherein the head comprises a write element and a first read element; a preamp circuit comprising an interface comprising at least a write line associated with the write element of the head and a first read line associated with the first read element of the head; and control circuitry configured to: receive a first read signal from the preamp circuit over the first read line during a read operation; and transmit configuration data to the preamp circuit over the first read line during a write operation, wherein the configuration data configures at least one write parameter of the write operation, wherein the write parameter comprises at least one of an amplitude of a write assist bias, an overshoot amplitude of the write assist bias, or an overshoot duration of the write assist bias.
This invention relates to data storage devices, specifically hard disk drives (HDDs), addressing the challenge of efficiently managing write assist bias parameters during data writing operations. The device includes a magnetic media, a head with a write element and a first read element, and a preamp circuit with an interface connecting the head to control circuitry. The preamp circuit features at least a write line for the write element and a first read line for the first read element. During a read operation, the control circuitry receives a first read signal from the preamp circuit over the first read line. During a write operation, the control circuitry transmits configuration data over the same first read line to adjust at least one write parameter of the write assist bias. The write assist bias parameters include amplitude, overshoot amplitude, and overshoot duration, which are dynamically configured to optimize write performance and reliability. By reusing the read line for configuration data transmission, the design reduces hardware complexity and cost while enabling precise control over write assist bias characteristics. This approach enhances data writing efficiency and accuracy in magnetic storage systems.
6. A data storage device comprising: a magnetic media; a head actuated over the magnetic media, wherein the head comprises: a write element; a first read element; and a second read element; and a preamp circuit comprising an interface comprising: at least a write line associated with the write element of the head; a first read line associated with the first read element of the head; and a second read line associated with the second read element of the head; and control circuitry configured to: receive a first read signal from the preamp circuit over the first read line during a read operation; transmit configuration data to the preamp circuit over the first read line during a write operation; receive a second read signal from the preamp circuit over the second read line during the read operation; and transmit configuration data to the preamp circuit over the first read line and the second read line during the write operation.
This invention relates to a data storage device, specifically a hard disk drive (HDD) or similar magnetic storage system, addressing the challenge of efficiently managing data read and write operations while optimizing signal pathways. The device includes a magnetic media for storing data and a head assembly positioned over the media. The head comprises a write element for recording data and two read elements for retrieving data. A preamp circuit interfaces with the head, featuring dedicated lines for each component: a write line for the write element, a first read line for the first read element, and a second read line for the second read element. During read operations, the control circuitry receives data signals from both read elements via their respective read lines. During write operations, the control circuitry transmits configuration data to the preamp circuit over the first read line and both read lines, enabling dynamic adjustment of read/write parameters. This dual-purpose use of read lines during write operations reduces the need for additional dedicated control lines, simplifying the device's electrical architecture while maintaining high-performance data handling. The system ensures efficient signal routing and adaptability in magnetic storage operations.
7. The data storage device as recited in claim 6 , wherein the configuration data configures a write parameter of the write operation into one of at least five different modes.
A data storage device includes a controller and a non-volatile memory array. The controller performs write operations to the memory array based on configuration data. The configuration data adjusts a write parameter of the write operation into one of at least five different modes. These modes may include variations in write voltage, write duration, write current, or other parameters that influence the write operation's behavior. The controller selects the appropriate mode based on factors such as the memory cell's wear level, data retention requirements, or performance needs. The device may also include error correction mechanisms to handle data integrity issues arising from different write modes. The configuration data can be dynamically updated to optimize performance, endurance, or reliability of the memory array. The write parameter adjustments allow the device to balance trade-offs between speed, power consumption, and data retention, ensuring efficient and reliable storage operations.
8. The data storage device as recited in claim 7 , wherein the write parameter comprises at least one of an amplitude of a write current, an overshoot amplitude of the write current, or an overshoot duration of the write current.
This invention relates to data storage devices, specifically magnetic recording systems such as hard disk drives (HDDs) or solid-state drives (SSDs), where precise control of write parameters is critical for reliable data storage. The problem addressed is ensuring accurate and stable data writing by optimizing write current characteristics to prevent errors and improve storage performance. The invention describes a data storage device with a controller that adjusts write parameters during data writing operations. These parameters include the amplitude of the write current, the overshoot amplitude (a temporary increase in current above the steady-state level), and the overshoot duration (how long this increase lasts). By dynamically controlling these factors, the device can enhance write reliability, reduce signal interference, and minimize data corruption. The controller may use feedback mechanisms or predefined profiles to determine the optimal settings for different storage conditions, such as varying disk speeds or environmental factors. The invention also involves a method for determining these write parameters, which may include measuring signal quality, analyzing error rates, or simulating write operations to find the most effective settings. The goal is to balance write speed and accuracy, ensuring data integrity while maintaining performance. This approach is particularly useful in high-density storage systems where precise current control is essential to prevent adjacent track interference and other write-related issues.
9. A data storage device comprising: a magnetic media; a head actuated over the magnetic media, wherein the head comprises a write element and a first read element; a preamp circuit comprising an interface comprising at least a write line associated with the write element of the head and a first read line associated with the first read element of the head; and control circuitry configured to: receive a first read signal from the preamp circuit over the first read line during a read operation; and transmit configuration data to the preamp circuit over the first read line, wherein the configuration data is for configuring at least one write parameter of a write operation, wherein the write parameter comprises at least one of an amplitude of a laser current, an overshoot amplitude of the laser current, or an overshoot duration of the laser current.
A data storage device includes a magnetic media and a head actuated over the media, featuring a write element and a first read element. The device also includes a preamp circuit with an interface that connects to the head via at least a write line for the write element and a first read line for the first read element. Control circuitry is configured to receive a first read signal from the preamp circuit over the first read line during a read operation. Additionally, the control circuitry transmits configuration data to the preamp circuit over the same first read line. This configuration data adjusts at least one write parameter for a subsequent write operation, such as the amplitude of a laser current, the overshoot amplitude of the laser current, or the overshoot duration of the laser current. The system enables dynamic adjustment of write parameters to optimize performance, particularly in heat-assisted magnetic recording (HAMR) where precise laser control is critical for reliable data storage. The reuse of the read line for configuration data transmission simplifies the device design by reducing the need for additional dedicated control lines.
10. The data storage device as recited in claim 9 , wherein the control circuitry is further configured to transmit the configuration data to the preamp circuit over the first read line during the write operation.
A data storage device, such as a hard disk drive or solid-state drive, includes a preamp circuit and control circuitry. The preamp circuit amplifies signals during read and write operations, while the control circuitry manages data processing and device operations. A challenge in such devices is efficiently configuring the preamp circuit to optimize performance during write operations. The invention addresses this by enabling the control circuitry to transmit configuration data to the preamp circuit over a first read line during a write operation. This approach leverages existing signal paths to avoid additional wiring or dedicated communication channels, reducing complexity and cost. The configuration data adjusts parameters like amplification levels, timing, or signal conditioning to improve write operation reliability and speed. The preamp circuit processes this data to dynamically adapt its behavior, ensuring optimal signal integrity and performance. This method enhances data storage efficiency by integrating configuration updates seamlessly into the write process without interrupting normal operation. The solution is particularly useful in high-density storage devices where precise signal control is critical.
11. The data storage device as recited in claim 9 , wherein the write parameter comprises at least one of an amplitude of a write current, an overshoot amplitude of the write current, or an overshoot duration of the write current.
This invention relates to data storage devices, specifically magnetic recording systems, and addresses the challenge of optimizing write operations to improve data reliability and performance. The invention focuses on adjusting write parameters during data storage to enhance the accuracy and efficiency of magnetic recording. The device includes a write head that writes data to a storage medium by applying a write current, and a controller that dynamically adjusts the write current based on specific parameters to ensure proper data recording. The key innovation involves modifying at least one of three write current parameters: the amplitude of the write current, the overshoot amplitude of the write current, or the overshoot duration of the write current. These adjustments help compensate for variations in the storage medium or environmental conditions, reducing errors and improving write reliability. The controller may use feedback mechanisms or predefined settings to determine the optimal values for these parameters, ensuring consistent and accurate data storage. This approach is particularly useful in high-density storage systems where precise control of write operations is critical for maintaining data integrity.
12. The data storage device as recited in claim 9 , wherein the write parameter comprises at least one of an amplitude of a write assist bias, an overshoot amplitude of the write assist bias, or an overshoot duration of the write assist bias.
This invention relates to data storage devices, specifically those using write assist bias techniques to improve data writing reliability. The problem addressed is optimizing write operations in storage devices, particularly in environments where signal integrity or power efficiency is critical. The invention involves adjusting write parameters to enhance performance, such as the amplitude, overshoot amplitude, or overshoot duration of a write assist bias. The write assist bias is a controlled electrical signal applied during data writing to stabilize or improve the writing process. By fine-tuning these parameters, the device can achieve more reliable data storage, reduce errors, and potentially lower power consumption. The invention may be applied in various storage technologies, including magnetic or resistive memory, where precise control of write operations is essential. The adjustment of these parameters allows the device to adapt to different operating conditions, ensuring consistent performance across varying temperatures, voltages, or usage scenarios. This approach helps mitigate issues like signal degradation or write failures, which are common in high-density storage systems. The invention focuses on dynamically optimizing the write assist bias to maintain data integrity and efficiency in storage operations.
13. The data storage device as recited in claim 9 , wherein the head further comprises a second read element and the interface of the preamp circuit further comprises a second read line associated with the second read element of the head, and the control circuitry is further configured to: receive a second read signal from the preamp circuit over the second read line during the read operation; and transmit configuration data to the preamp circuit over the first read line and the second read line during the write operation.
A data storage device, such as a hard disk drive or solid-state drive, includes a head with multiple read elements and a preamp circuit with an interface that supports multiple read lines. The head contains at least two read elements, each associated with a dedicated read line in the preamp circuit's interface. During a read operation, the preamp circuit receives read signals from the head's read elements via their respective read lines and processes these signals for data retrieval. During a write operation, the control circuitry transmits configuration data to the preamp circuit over both the first and second read lines, enabling dynamic adjustment of preamp settings. This dual-line configuration allows for efficient data handling and flexible preamp control, improving read/write performance and reliability. The system ensures proper synchronization between the head and preamp circuit, optimizing signal integrity and operational efficiency. The invention addresses challenges in managing multiple read elements and preamp configurations in high-density storage devices, enhancing data accuracy and storage capacity.
14. The data storage device as recited in claim 13 , wherein the configuration data configures a write parameter of the write operation into one of at least five different modes.
A data storage device includes a controller and a non-volatile memory array. The controller performs write operations to the memory array based on configuration data. The configuration data adjusts a write parameter of the write operation into one of at least five different modes. These modes may include variations in write voltage, write pulse duration, write current, or other parameters that influence the write operation's behavior. The device may also include error correction mechanisms to handle data integrity issues arising from different write modes. The configuration data can be dynamically adjusted based on operating conditions, such as temperature, wear level, or performance requirements, to optimize storage efficiency and reliability. The write parameter adjustments may be applied to specific memory cells, blocks, or the entire memory array to balance performance, endurance, and power consumption. This flexibility allows the device to adapt to different usage scenarios, such as high-speed writes, low-power operation, or extended lifespan requirements. The system may also include monitoring circuitry to track memory cell health and adjust write parameters accordingly.
15. The data storage device as recited in claim 14 , wherein the write parameter comprises at least one of an amplitude of a write current, an overshoot amplitude of the write current, or an overshoot duration of the write current.
This invention relates to data storage devices, specifically to optimizing write operations in magnetic storage media such as hard disk drives (HDDs). The problem addressed is the need to improve write performance and reliability by dynamically adjusting write parameters to account for variations in storage conditions, such as temperature, media characteristics, or head position. The invention involves a data storage device that includes a controller configured to determine a write parameter for a write operation based on a detected condition, such as the position of a write head relative to a storage medium. The controller then adjusts the write parameter to optimize the write operation, ensuring data integrity and efficiency. The write parameter may include the amplitude of the write current, the overshoot amplitude of the write current, or the overshoot duration of the write current. By dynamically adjusting these parameters, the device can compensate for factors like thermal drift or media defects, reducing write errors and improving overall storage performance. The invention ensures reliable data writing by tailoring the write current characteristics to the specific conditions encountered during operation.
16. A data storage device comprising: a magnetic media; a head actuated over the magnetic media, wherein the head comprises a write element and a first read element; a preamp circuit comprising an interface comprising at least a write line associated with the write element of the head and a first read line associated with the first read element of the head; and a means for receiving a first read signal from the preamp circuit over the first read line during a read operation; a means for transmitting configuration data to the preamp circuit over the first read line a means for disabling and enabling the means for receiving a first read signal the preamp circuit over the first read line during a read operation; and a means for disabling and enabling the means for transmitting configuration data to the preamp circuit over the first read line, wherein the configuration data configures at least one write parameter of a write operation.
A data storage device includes a magnetic media and a head actuated over the media, comprising a write element and a first read element. The device also includes a preamp circuit with an interface that has at least a write line connected to the write element and a first read line connected to the first read element. The device further includes a means for receiving a first read signal from the preamp circuit over the first read line during a read operation, a means for transmitting configuration data to the preamp circuit over the first read line, and a means for disabling and enabling the means for receiving the first read signal. Additionally, the device includes a means for disabling and enabling the means for transmitting configuration data. The configuration data configures at least one write parameter of a write operation. This setup allows the same read line to be used for both reading data from the media and transmitting configuration data to the preamp circuit, optimizing the device's functionality by reusing existing connections. The disabling and enabling mechanisms ensure proper operation by preventing conflicts between read and configuration data transmission. The write parameters adjusted by the configuration data may include settings such as write current, timing, or other characteristics that influence the write operation's performance. This design improves efficiency by reducing the need for additional dedicated lines for configuration data transmission.
17. A preamp circuit comprising: an interface comprising: at least a write line associated with a write element of a head; a first read line associated with a first read element of the head; and a second read line associated with a second read element of the head; a first output amplifier configured to transmit a first read signal associated with the first read element over the first read line during a read operation; a second output amplifier configured to transmit a second read signal associated with the second read element over the second read line during the read operation; a first input amplifier configured to receive configuration data over the first read line, wherein the configuration data is for configuring at least one write parameter of a write operation; and a second input amplifier configured to receive configuration data over the second read line, wherein the configuration data is for configuring the at least one write parameter of the write operation.
This invention relates to a preamp circuit for use in data storage devices, particularly those involving magnetic heads with multiple read elements. The problem addressed is the need for efficient signal transmission and configuration data handling in read/write operations. The preamp circuit includes an interface with a write line connected to a write element of the head, a first read line connected to a first read element, and a second read line connected to a second read element. During read operations, a first output amplifier transmits a first read signal from the first read element over the first read line, while a second output amplifier transmits a second read signal from the second read element over the second read line. Additionally, the circuit includes a first input amplifier that receives configuration data over the first read line and a second input amplifier that receives configuration data over the second read line. This configuration data is used to set at least one write parameter for subsequent write operations. The dual-purpose use of read lines for both read signal transmission and configuration data reception optimizes the circuit design by reducing the need for additional dedicated lines, improving efficiency and reducing complexity in data storage systems.
18. The preamp circuit as recited in claim 17 , wherein the input amplifier is configured to receive the configuration data over the first read line during the write operation.
A preamplifier circuit is designed for use in memory systems, particularly for managing data read and write operations. The circuit includes an input amplifier that processes data signals from a memory array, such as a magnetic or solid-state storage device. During a write operation, the input amplifier is configured to receive configuration data over a first read line, which is typically used for transmitting read data from the memory array to the amplifier. This dual-use of the read line allows the circuit to streamline its design by reducing the number of dedicated signal lines, thereby saving space and reducing complexity. The configuration data may include settings for adjusting the amplifier's gain, offset, or other operational parameters to optimize performance. By integrating this functionality, the preamplifier can dynamically adapt to different memory access scenarios, improving efficiency and reliability. The circuit may also include additional components, such as a write driver for transmitting write data to the memory array and a sense amplifier for amplifying read signals. The overall design aims to enhance data handling in memory systems by optimizing signal pathways and operational flexibility.
19. The preamp circuit as recited in claim 17 , wherein the configuration data comprises a write parameter comprising at least one of an amplitude of a write current, an overshoot amplitude of the write current, or an overshoot duration of the write current.
This invention relates to a preamplifier circuit for controlling write operations in data storage devices, particularly addressing the challenge of optimizing write current parameters to improve data reliability and performance. The preamp circuit includes a configuration module that adjusts write parameters to enhance the accuracy and efficiency of data writing. The configuration data specifies key write current characteristics, including the amplitude of the write current, the amplitude of any overshoot in the write current, and the duration of the overshoot. These parameters are dynamically configurable to adapt to different storage media conditions, ensuring optimal write performance. The circuit may also include a current driver that generates the write current based on the configured parameters, and a control module that manages the overall operation of the preamp circuit. By precisely controlling these write current characteristics, the invention mitigates issues such as signal distortion and data errors, leading to more reliable data storage and retrieval. The configurable nature of the write parameters allows the circuit to be tailored for various storage technologies, including hard disk drives and solid-state drives, enhancing versatility and performance across different applications.
20. The preamp circuit as recited in claim 17 , wherein the configuration data configures a write parameter of the write operation into one of at least five different modes.
A preamplifier circuit for data storage devices, such as hard disk drives, includes a configurable write operation mode selector. The circuit adjusts write parameters based on configuration data to optimize performance and reliability. The configuration data enables selection among at least five distinct write modes, each corresponding to different write parameter settings. These modes may include variations in write current, timing, or other signal characteristics to accommodate different storage media conditions, environmental factors, or data integrity requirements. The circuit dynamically adapts the write operation to improve data accuracy and storage efficiency. This flexibility allows the system to handle varying operational demands while maintaining consistent performance across different storage scenarios. The configurable write modes enhance the circuit's versatility in supporting diverse storage applications and media types.
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March 28, 2021
April 5, 2022
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